Home / 312,308.05-468,391.93-143,666.40

Finding the Fourth Proportional to 312,308.05, 468,391.93 and 143,666.40

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Solution

The fourth proportional to 312,308.05, 468,391.93 and 143,666.40 is: 215,467.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,308.05 : 468,391.93 = 143,666.40 : x
  2. Step 2: Convert to fraction form
    312,308.05/468,391.93 = 143,666.40/x
  3. Step 3: Cross multiply
    312,308.05x = 468,391.93 × 143,666.40
  4. Step 4: Simplify right side
    312,308.05x = 67,292,182,372.15
  5. Step 5: Solve for x
    x = 67,292,182,372.15/312,308.05
  6. Step 6: Final answer
    x = 215,467.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.